diff options
Diffstat (limited to 'qemu/tests/libqtest.c')
| -rw-r--r-- | qemu/tests/libqtest.c | 825 |
1 files changed, 825 insertions, 0 deletions
diff --git a/qemu/tests/libqtest.c b/qemu/tests/libqtest.c new file mode 100644 index 000000000..e5188e032 --- /dev/null +++ b/qemu/tests/libqtest.c @@ -0,0 +1,825 @@ +/* + * QTest + * + * Copyright IBM, Corp. 2012 + * Copyright Red Hat, Inc. 2012 + * Copyright SUSE LINUX Products GmbH 2013 + * + * Authors: + * Anthony Liguori <aliguori@us.ibm.com> + * Paolo Bonzini <pbonzini@redhat.com> + * Andreas Färber <afaerber@suse.de> + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + * + */ +#include "libqtest.h" + +#include <glib.h> +#include <sys/types.h> +#include <sys/socket.h> +#include <sys/wait.h> +#include <sys/un.h> +#include <inttypes.h> +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> + +#include "qemu/compiler.h" +#include "qemu/osdep.h" +#include "qapi/qmp/json-parser.h" +#include "qapi/qmp/json-streamer.h" +#include "qapi/qmp/qjson.h" + +#define MAX_IRQ 256 +#define SOCKET_TIMEOUT 5 + +QTestState *global_qtest; + +struct QTestState +{ + int fd; + int qmp_fd; + bool irq_level[MAX_IRQ]; + GString *rx; + pid_t qemu_pid; /* our child QEMU process */ + struct sigaction sigact_old; /* restored on exit */ +}; + +static GList *qtest_instances; +static struct sigaction sigact_old; + +#define g_assert_no_errno(ret) do { \ + g_assert_cmpint(ret, !=, -1); \ +} while (0) + +static int init_socket(const char *socket_path) +{ + struct sockaddr_un addr; + int sock; + int ret; + + sock = socket(PF_UNIX, SOCK_STREAM, 0); + g_assert_no_errno(sock); + + addr.sun_family = AF_UNIX; + snprintf(addr.sun_path, sizeof(addr.sun_path), "%s", socket_path); + qemu_set_cloexec(sock); + + do { + ret = bind(sock, (struct sockaddr *)&addr, sizeof(addr)); + } while (ret == -1 && errno == EINTR); + g_assert_no_errno(ret); + ret = listen(sock, 1); + g_assert_no_errno(ret); + + return sock; +} + +static int socket_accept(int sock) +{ + struct sockaddr_un addr; + socklen_t addrlen; + int ret; + struct timeval timeout = { .tv_sec = SOCKET_TIMEOUT, + .tv_usec = 0 }; + + setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, (void *)&timeout, + sizeof(timeout)); + + do { + addrlen = sizeof(addr); + ret = accept(sock, (struct sockaddr *)&addr, &addrlen); + } while (ret == -1 && errno == EINTR); + if (ret == -1) { + fprintf(stderr, "%s failed: %s\n", __func__, strerror(errno)); + } + close(sock); + + return ret; +} + +static void kill_qemu(QTestState *s) +{ + if (s->qemu_pid != -1) { + kill(s->qemu_pid, SIGTERM); + waitpid(s->qemu_pid, NULL, 0); + } +} + +static void sigabrt_handler(int signo) +{ + GList *elem; + for (elem = qtest_instances; elem; elem = elem->next) { + kill_qemu(elem->data); + } +} + +static void setup_sigabrt_handler(void) +{ + struct sigaction sigact; + + /* Catch SIGABRT to clean up on g_assert() failure */ + sigact = (struct sigaction){ + .sa_handler = sigabrt_handler, + .sa_flags = SA_RESETHAND, + }; + sigemptyset(&sigact.sa_mask); + sigaction(SIGABRT, &sigact, &sigact_old); +} + +static void cleanup_sigabrt_handler(void) +{ + sigaction(SIGABRT, &sigact_old, NULL); +} + +QTestState *qtest_init(const char *extra_args) +{ + QTestState *s; + int sock, qmpsock, i; + gchar *socket_path; + gchar *qmp_socket_path; + gchar *command; + const char *qemu_binary; + + qemu_binary = getenv("QTEST_QEMU_BINARY"); + g_assert(qemu_binary != NULL); + + s = g_malloc(sizeof(*s)); + + socket_path = g_strdup_printf("/tmp/qtest-%d.sock", getpid()); + qmp_socket_path = g_strdup_printf("/tmp/qtest-%d.qmp", getpid()); + + sock = init_socket(socket_path); + qmpsock = init_socket(qmp_socket_path); + + /* Only install SIGABRT handler once */ + if (!qtest_instances) { + setup_sigabrt_handler(); + } + + qtest_instances = g_list_prepend(qtest_instances, s); + + s->qemu_pid = fork(); + if (s->qemu_pid == 0) { + setenv("QEMU_AUDIO_DRV", "none", true); + command = g_strdup_printf("exec %s " + "-qtest unix:%s,nowait " + "-qtest-log %s " + "-qmp unix:%s,nowait " + "-machine accel=qtest " + "-display none " + "%s", qemu_binary, socket_path, + getenv("QTEST_LOG") ? "/dev/fd/2" : "/dev/null", + qmp_socket_path, + extra_args ?: ""); + execlp("/bin/sh", "sh", "-c", command, NULL); + exit(1); + } + + s->fd = socket_accept(sock); + if (s->fd >= 0) { + s->qmp_fd = socket_accept(qmpsock); + } + unlink(socket_path); + unlink(qmp_socket_path); + g_free(socket_path); + g_free(qmp_socket_path); + + g_assert(s->fd >= 0 && s->qmp_fd >= 0); + + s->rx = g_string_new(""); + for (i = 0; i < MAX_IRQ; i++) { + s->irq_level[i] = false; + } + + /* Read the QMP greeting and then do the handshake */ + qtest_qmp_discard_response(s, ""); + qtest_qmp_discard_response(s, "{ 'execute': 'qmp_capabilities' }"); + + if (getenv("QTEST_STOP")) { + kill(s->qemu_pid, SIGSTOP); + } + + return s; +} + +void qtest_quit(QTestState *s) +{ + /* Uninstall SIGABRT handler on last instance */ + if (qtest_instances && !qtest_instances->next) { + cleanup_sigabrt_handler(); + } + + qtest_instances = g_list_remove(qtest_instances, s); + + kill_qemu(s); + close(s->fd); + close(s->qmp_fd); + g_string_free(s->rx, true); + g_free(s); +} + +static void socket_send(int fd, const char *buf, size_t size) +{ + size_t offset; + + offset = 0; + while (offset < size) { + ssize_t len; + + len = write(fd, buf + offset, size - offset); + if (len == -1 && errno == EINTR) { + continue; + } + + g_assert_no_errno(len); + g_assert_cmpint(len, >, 0); + + offset += len; + } +} + +static void socket_sendf(int fd, const char *fmt, va_list ap) +{ + gchar *str = g_strdup_vprintf(fmt, ap); + size_t size = strlen(str); + + socket_send(fd, str, size); + g_free(str); +} + +static void GCC_FMT_ATTR(2, 3) qtest_sendf(QTestState *s, const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + socket_sendf(s->fd, fmt, ap); + va_end(ap); +} + +static GString *qtest_recv_line(QTestState *s) +{ + GString *line; + size_t offset; + char *eol; + + while ((eol = strchr(s->rx->str, '\n')) == NULL) { + ssize_t len; + char buffer[1024]; + + len = read(s->fd, buffer, sizeof(buffer)); + if (len == -1 && errno == EINTR) { + continue; + } + + if (len == -1 || len == 0) { + fprintf(stderr, "Broken pipe\n"); + exit(1); + } + + g_string_append_len(s->rx, buffer, len); + } + + offset = eol - s->rx->str; + line = g_string_new_len(s->rx->str, offset); + g_string_erase(s->rx, 0, offset + 1); + + return line; +} + +static gchar **qtest_rsp(QTestState *s, int expected_args) +{ + GString *line; + gchar **words; + int i; + +redo: + line = qtest_recv_line(s); + words = g_strsplit(line->str, " ", 0); + g_string_free(line, TRUE); + + if (strcmp(words[0], "IRQ") == 0) { + int irq; + + g_assert(words[1] != NULL); + g_assert(words[2] != NULL); + + irq = strtoul(words[2], NULL, 0); + g_assert_cmpint(irq, >=, 0); + g_assert_cmpint(irq, <, MAX_IRQ); + + if (strcmp(words[1], "raise") == 0) { + s->irq_level[irq] = true; + } else { + s->irq_level[irq] = false; + } + + g_strfreev(words); + goto redo; + } + + g_assert(words[0] != NULL); + g_assert_cmpstr(words[0], ==, "OK"); + + if (expected_args) { + for (i = 0; i < expected_args; i++) { + g_assert(words[i] != NULL); + } + } else { + g_strfreev(words); + } + + return words; +} + +typedef struct { + JSONMessageParser parser; + QDict *response; +} QMPResponseParser; + +static void qmp_response(JSONMessageParser *parser, QList *tokens) +{ + QMPResponseParser *qmp = container_of(parser, QMPResponseParser, parser); + QObject *obj; + + obj = json_parser_parse(tokens, NULL); + if (!obj) { + fprintf(stderr, "QMP JSON response parsing failed\n"); + exit(1); + } + + g_assert(qobject_type(obj) == QTYPE_QDICT); + g_assert(!qmp->response); + qmp->response = (QDict *)obj; +} + +QDict *qtest_qmp_receive(QTestState *s) +{ + QMPResponseParser qmp; + bool log = getenv("QTEST_LOG") != NULL; + + qmp.response = NULL; + json_message_parser_init(&qmp.parser, qmp_response); + while (!qmp.response) { + ssize_t len; + char c; + + len = read(s->qmp_fd, &c, 1); + if (len == -1 && errno == EINTR) { + continue; + } + + if (len == -1 || len == 0) { + fprintf(stderr, "Broken pipe\n"); + exit(1); + } + + if (log) { + len = write(2, &c, 1); + } + json_message_parser_feed(&qmp.parser, &c, 1); + } + json_message_parser_destroy(&qmp.parser); + + return qmp.response; +} + +/** + * Allow users to send a message without waiting for the reply, + * in the case that they choose to discard all replies up until + * a particular EVENT is received. + */ +void qtest_async_qmpv(QTestState *s, const char *fmt, va_list ap) +{ + va_list ap_copy; + QObject *qobj; + + /* Going through qobject ensures we escape strings properly. + * This seemingly unnecessary copy is required in case va_list + * is an array type. + */ + va_copy(ap_copy, ap); + qobj = qobject_from_jsonv(fmt, &ap_copy); + va_end(ap_copy); + + /* No need to send anything for an empty QObject. */ + if (qobj) { + int log = getenv("QTEST_LOG") != NULL; + QString *qstr = qobject_to_json(qobj); + const char *str = qstring_get_str(qstr); + size_t size = qstring_get_length(qstr); + + if (log) { + fprintf(stderr, "%s", str); + } + /* Send QMP request */ + socket_send(s->qmp_fd, str, size); + + QDECREF(qstr); + qobject_decref(qobj); + } +} + +QDict *qtest_qmpv(QTestState *s, const char *fmt, va_list ap) +{ + qtest_async_qmpv(s, fmt, ap); + + /* Receive reply */ + return qtest_qmp_receive(s); +} + +QDict *qtest_qmp(QTestState *s, const char *fmt, ...) +{ + va_list ap; + QDict *response; + + va_start(ap, fmt); + response = qtest_qmpv(s, fmt, ap); + va_end(ap); + return response; +} + +void qtest_async_qmp(QTestState *s, const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + qtest_async_qmpv(s, fmt, ap); + va_end(ap); +} + +void qtest_qmpv_discard_response(QTestState *s, const char *fmt, va_list ap) +{ + QDict *response = qtest_qmpv(s, fmt, ap); + QDECREF(response); +} + +void qtest_qmp_discard_response(QTestState *s, const char *fmt, ...) +{ + va_list ap; + QDict *response; + + va_start(ap, fmt); + response = qtest_qmpv(s, fmt, ap); + va_end(ap); + QDECREF(response); +} + +void qtest_qmp_eventwait(QTestState *s, const char *event) +{ + QDict *response; + + for (;;) { + response = qtest_qmp_receive(s); + if ((qdict_haskey(response, "event")) && + (strcmp(qdict_get_str(response, "event"), event) == 0)) { + QDECREF(response); + break; + } + QDECREF(response); + } +} + + +const char *qtest_get_arch(void) +{ + const char *qemu = getenv("QTEST_QEMU_BINARY"); + g_assert(qemu != NULL); + const char *end = strrchr(qemu, '/'); + + return end + strlen("/qemu-system-"); +} + +bool qtest_get_irq(QTestState *s, int num) +{ + /* dummy operation in order to make sure irq is up to date */ + qtest_inb(s, 0); + + return s->irq_level[num]; +} + +static int64_t qtest_clock_rsp(QTestState *s) +{ + gchar **words; + int64_t clock; + words = qtest_rsp(s, 2); + clock = g_ascii_strtoll(words[1], NULL, 0); + g_strfreev(words); + return clock; +} + +int64_t qtest_clock_step_next(QTestState *s) +{ + qtest_sendf(s, "clock_step\n"); + return qtest_clock_rsp(s); +} + +int64_t qtest_clock_step(QTestState *s, int64_t step) +{ + qtest_sendf(s, "clock_step %"PRIi64"\n", step); + return qtest_clock_rsp(s); +} + +int64_t qtest_clock_set(QTestState *s, int64_t val) +{ + qtest_sendf(s, "clock_set %"PRIi64"\n", val); + return qtest_clock_rsp(s); +} + +void qtest_irq_intercept_out(QTestState *s, const char *qom_path) +{ + qtest_sendf(s, "irq_intercept_out %s\n", qom_path); + qtest_rsp(s, 0); +} + +void qtest_irq_intercept_in(QTestState *s, const char *qom_path) +{ + qtest_sendf(s, "irq_intercept_in %s\n", qom_path); + qtest_rsp(s, 0); +} + +static void qtest_out(QTestState *s, const char *cmd, uint16_t addr, uint32_t value) +{ + qtest_sendf(s, "%s 0x%x 0x%x\n", cmd, addr, value); + qtest_rsp(s, 0); +} + +void qtest_outb(QTestState *s, uint16_t addr, uint8_t value) +{ + qtest_out(s, "outb", addr, value); +} + +void qtest_outw(QTestState *s, uint16_t addr, uint16_t value) +{ + qtest_out(s, "outw", addr, value); +} + +void qtest_outl(QTestState *s, uint16_t addr, uint32_t value) +{ + qtest_out(s, "outl", addr, value); +} + +static uint32_t qtest_in(QTestState *s, const char *cmd, uint16_t addr) +{ + gchar **args; + uint32_t value; + + qtest_sendf(s, "%s 0x%x\n", cmd, addr); + args = qtest_rsp(s, 2); + value = strtoul(args[1], NULL, 0); + g_strfreev(args); + + return value; +} + +uint8_t qtest_inb(QTestState *s, uint16_t addr) +{ + return qtest_in(s, "inb", addr); +} + +uint16_t qtest_inw(QTestState *s, uint16_t addr) +{ + return qtest_in(s, "inw", addr); +} + +uint32_t qtest_inl(QTestState *s, uint16_t addr) +{ + return qtest_in(s, "inl", addr); +} + +static void qtest_write(QTestState *s, const char *cmd, uint64_t addr, + uint64_t value) +{ + qtest_sendf(s, "%s 0x%" PRIx64 " 0x%" PRIx64 "\n", cmd, addr, value); + qtest_rsp(s, 0); +} + +void qtest_writeb(QTestState *s, uint64_t addr, uint8_t value) +{ + qtest_write(s, "writeb", addr, value); +} + +void qtest_writew(QTestState *s, uint64_t addr, uint16_t value) +{ + qtest_write(s, "writew", addr, value); +} + +void qtest_writel(QTestState *s, uint64_t addr, uint32_t value) +{ + qtest_write(s, "writel", addr, value); +} + +void qtest_writeq(QTestState *s, uint64_t addr, uint64_t value) +{ + qtest_write(s, "writeq", addr, value); +} + +static uint64_t qtest_read(QTestState *s, const char *cmd, uint64_t addr) +{ + gchar **args; + uint64_t value; + + qtest_sendf(s, "%s 0x%" PRIx64 "\n", cmd, addr); + args = qtest_rsp(s, 2); + value = strtoull(args[1], NULL, 0); + g_strfreev(args); + + return value; +} + +uint8_t qtest_readb(QTestState *s, uint64_t addr) +{ + return qtest_read(s, "readb", addr); +} + +uint16_t qtest_readw(QTestState *s, uint64_t addr) +{ + return qtest_read(s, "readw", addr); +} + +uint32_t qtest_readl(QTestState *s, uint64_t addr) +{ + return qtest_read(s, "readl", addr); +} + +uint64_t qtest_readq(QTestState *s, uint64_t addr) +{ + return qtest_read(s, "readq", addr); +} + +static int hex2nib(char ch) +{ + if (ch >= '0' && ch <= '9') { + return ch - '0'; + } else if (ch >= 'a' && ch <= 'f') { + return 10 + (ch - 'a'); + } else if (ch >= 'A' && ch <= 'F') { + return 10 + (ch - 'a'); + } else { + return -1; + } +} + +void qtest_memread(QTestState *s, uint64_t addr, void *data, size_t size) +{ + uint8_t *ptr = data; + gchar **args; + size_t i; + + qtest_sendf(s, "read 0x%" PRIx64 " 0x%zx\n", addr, size); + args = qtest_rsp(s, 2); + + for (i = 0; i < size; i++) { + ptr[i] = hex2nib(args[1][2 + (i * 2)]) << 4; + ptr[i] |= hex2nib(args[1][2 + (i * 2) + 1]); + } + + g_strfreev(args); +} + +void qtest_add_func(const char *str, void (*fn)) +{ + gchar *path = g_strdup_printf("/%s/%s", qtest_get_arch(), str); + g_test_add_func(path, fn); + g_free(path); +} + +void qtest_add_data_func(const char *str, const void *data, void (*fn)) +{ + gchar *path = g_strdup_printf("/%s/%s", qtest_get_arch(), str); + g_test_add_data_func(path, data, fn); + g_free(path); +} + +void qtest_bufwrite(QTestState *s, uint64_t addr, const void *data, size_t size) +{ + gchar *bdata; + + bdata = g_base64_encode(data, size); + qtest_sendf(s, "b64write 0x%" PRIx64 " 0x%zx ", addr, size); + socket_send(s->fd, bdata, strlen(bdata)); + socket_send(s->fd, "\n", 1); + qtest_rsp(s, 0); + g_free(bdata); +} + +void qtest_bufread(QTestState *s, uint64_t addr, void *data, size_t size) +{ + gchar **args; + size_t len; + + qtest_sendf(s, "b64read 0x%" PRIx64 " 0x%zx\n", addr, size); + args = qtest_rsp(s, 2); + + g_base64_decode_inplace(args[1], &len); + if (size != len) { + fprintf(stderr, "bufread: asked for %zu bytes but decoded %zu\n", + size, len); + len = MIN(len, size); + } + + memcpy(data, args[1], len); + g_strfreev(args); +} + +void qtest_memwrite(QTestState *s, uint64_t addr, const void *data, size_t size) +{ + const uint8_t *ptr = data; + size_t i; + char *enc = g_malloc(2 * size + 1); + + for (i = 0; i < size; i++) { + sprintf(&enc[i * 2], "%02x", ptr[i]); + } + + qtest_sendf(s, "write 0x%" PRIx64 " 0x%zx 0x%s\n", addr, size, enc); + qtest_rsp(s, 0); + g_free(enc); +} + +void qtest_memset(QTestState *s, uint64_t addr, uint8_t pattern, size_t size) +{ + qtest_sendf(s, "memset 0x%" PRIx64 " 0x%zx 0x%02x\n", addr, size, pattern); + qtest_rsp(s, 0); +} + +QDict *qmp(const char *fmt, ...) +{ + va_list ap; + QDict *response; + + va_start(ap, fmt); + response = qtest_qmpv(global_qtest, fmt, ap); + va_end(ap); + return response; +} + +void qmp_async(const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + qtest_async_qmpv(global_qtest, fmt, ap); + va_end(ap); +} + +void qmp_discard_response(const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + qtest_qmpv_discard_response(global_qtest, fmt, ap); + va_end(ap); +} + +bool qtest_big_endian(void) +{ + const char *arch = qtest_get_arch(); + int i; + + static const struct { + const char *arch; + bool big_endian; + } endianness[] = { + { "aarch64", false }, + { "alpha", false }, + { "arm", false }, + { "cris", false }, + { "i386", false }, + { "lm32", true }, + { "m68k", true }, + { "microblaze", true }, + { "microblazeel", false }, + { "mips", true }, + { "mips64", true }, + { "mips64el", false }, + { "mipsel", false }, + { "moxie", true }, + { "or32", true }, + { "ppc", true }, + { "ppc64", true }, + { "ppcemb", true }, + { "s390x", true }, + { "sh4", false }, + { "sh4eb", true }, + { "sparc", true }, + { "sparc64", true }, + { "unicore32", false }, + { "x86_64", false }, + { "xtensa", false }, + { "xtensaeb", true }, + {}, + }; + + for (i = 0; endianness[i].arch; i++) { + if (strcmp(endianness[i].arch, arch) == 0) { + return endianness[i].big_endian; + } + } + + return false; +} |